公开(公告)号：US20250087670A1

公开(公告)日：2025-03-13

申请号：US18821222

申请日：2024-08-30

Applicant: LG Energy Solution, Ltd.

Inventor： Youshin Lee ,  Kang Joon Park ,  Jaeyoung Lee ,  Minjeong Kim ,  Sin Young Park ,  Gi Beom Han

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525

Abstract: The positive electrode active material includes: a first phase containing a lithium manganese oxide with a rock salt structure; and a second phase containing a lithium metal oxide with a layered structure, in a mixed state. In the positive electrode active material, the content of manganese may account for about 50 mol % or more of the total content of metals contained in the positive electrode active material, excluding lithium, and niobium (Nb) which is additionally doped on the positive electrode active material may be further included in an amount of about 2,000 ppm to 9,500 ppm based on the total content of the positive electrode active material.